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Fix base64 decode

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Signed-off-by: Bryan Frimin <bryan@getprobo.com>
This commit is contained in:
Bryan Frimin
2025-04-23 13:48:09 -07:00
parent 29f96792af
commit c8d45b85e2
1 changed files with 8 additions and 4 deletions
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12
pkg/coredata/migrations/20250420T120000Z.sql
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@@ -223,20 +223,24 @@ RETURNS bytea AS $$
DECLARE DECLARE
padded_text text; padded_text text;
mod_length integer; mod_length integer;
normalized_text text;
BEGIN BEGIN
-- Replace URL-safe characters with standard base64 characters
normalized_text := translate(input_text, '-_', '+/');
-- Calculate how many padding characters we need to add -- Calculate how many padding characters we need to add
mod_length := length(input_text) % 4; mod_length := length(normalized_text) % 4;
-- Add the required padding -- Add the required padding
IF mod_length = 0 THEN IF mod_length = 0 THEN
padded_text := input_text; padded_text := normalized_text;
ELSIF mod_length = 1 THEN ELSIF mod_length = 1 THEN
-- Invalid base64 - length mod 4 can't be 1 -- Invalid base64 - length mod 4 can't be 1
RAISE EXCEPTION 'Invalid base64 length'; RAISE EXCEPTION 'Invalid base64 length';
ELSIF mod_length = 2 THEN ELSIF mod_length = 2 THEN
padded_text := input_text || '=='; padded_text := normalized_text || '==';
ELSIF mod_length = 3 THEN ELSIF mod_length = 3 THEN
padded_text := input_text || '='; padded_text := normalized_text || '=';
END IF; END IF;
-- Decode the padded base64 -- Decode the padded base64